A study investigating the sonoelectrochemical degradation of an organic compound employing Fenton's reagent

被引：43

作者：

Abdelsalam, ME ^{[1
]}

Birkin, PR ^{[1
]}

机构：

[1] Univ Southampton, Dept Chem, Southampton SO9 5NH, Hants, England

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2002年 / 4卷 / 21期

关键词：

D O I：

10.1039/b205987h

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The degradation of an organic dye molecule (specifically meldola blue, MDB) is reported under the influence of power ultrasound in combination with electrochemically-generated hydrogen peroxide. A novel flow system is employed to measure the degradation as a function of time while minimising the disturbance to the acoustics of the sonoelectrochemical reactor employed. The effect of adding Fe2+ to the rate of dye degradation is measured and demonstrated to be significant. Under optimum conditions the rate constant for dye degradation was found to reach a maximum value of (23.7 +/- 0.35) 10(-3) min(-1) assuming pseudo-first order kinetics. The rate constant for the complete destruction of MDB, determined by chemical oxygen demand, was found to be significantly slower at (10.2 +/- 2.6) 10(-3) min(-1).

引用

页码：5340 / 5345

页数：6

共 42 条

[21] The sonochemical degradation of azobenzene and related azo dyes: Rate enhancements via Fenton's reactions [J].

Joseph, JM ;

Destaillats, H ;

Hung, HM ;

Hoffmann, MR .

JOURNAL OF PHYSICAL CHEMISTRY A, 2000, 104 (02) :301-307

[22] ULTRASONIC IRRADIATION OF PARA-NITROPHENOL IN AQUEOUS-SOLUTION [J].

KOTRONAROU, A ;

MILLS, G ;

HOFFMANN, MR .

JOURNAL OF PHYSICAL CHEMISTRY, 1991, 95 (09) :3630-3638

[23] DECOMPOSITION OF PARATHION IN AQUEOUS-SOLUTION BY ULTRASONIC IRRADIATION [J].

KOTRONAROU, A ;

MILLS, G ;

HOFFMANN, MR .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1992, 26 (07) :1460-1462

[24] OH-radical formation by ultrasound in aqueous solution - Part II: Terephthalate and Fricke dosimetry and the influence of various conditions on the sonolytic yield [J].

Mark, G ;

Tauber, A ;

Rudiger, LA ;

Schuchmann, HP ;

Schulz, D ;

Mues, A ;

von Sonntag, C .

ULTRASONICS SONOCHEMISTRY, 1998, 5 (02) :41-52

[25]

Mason TJ, 1988, SONOCHEMISTRY THEORY

[26]

Miller J. C., 1993, STAT ANAL CHEM

[27] An ecologically effective water treatment technique using electrochemically generated hydroxyl radicals for in situ destruction of organic pollutants:: Application to herbicide 2,4-D [J].

Oturan, MA .

JOURNAL OF APPLIED ELECTROCHEMISTRY, 2000, 30 (04) :475-482

[28]

Oturan MA, 1999, PESTIC SCI, V55, P558, DOI 10.1002/(SICI)1096-9063(199905)55:5&lt

[29]

558::AID-PS968&gt

[30]

3.0.CO

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